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From: minforth@gmx.net (minforth)
Newsgroups: comp.lang.forth
Subject: Re: Complex square root of -1 : zsqrt(-1)
Date: Fri, 6 Sep 2024 08:14:11 +0000
Organization: novaBBS
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Better avoid calling external libraries for transcendental
functions. Calculation of fhypot is much faster and more accurate.

It is based on the calculation of fp square roots for which
there are very fast algorithms. E.g.
https://en.wikipedia.org/wiki/Fast_inverse_square_root